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BLACK HOLES an essential component of our universe - Space Discovery Documentary

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BLACK HOLES an essential component of our universe - Space Discovery Documentary

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All objects exert an attractive gravitational force which depends on their mass. Now, imagine an object with a very large mass which is concentrated into such a small volume that the gravitational field generated is powerful enough to prevent anything from escaping its clutches – even light. This bizarre concept intrigues everyone, in particular physicists who theorise about the nature of matter, space and time, and astrophysicists who look for real black holes out in space. Their study brings together the big ideas in fundamental science: Einstein’s theory of gravity – general relativity; the theory of the very small – quantum mechanics; and the origin and evolution of the universe – cosmology. In recent years scientists have sought the answers to questions such as does a black hole have a temperature? What exactly happens when an object falls into a black hole? How many black holes are there in our galaxy? What is the role of black holes in galaxy evolution?
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How the Universe Works - Black holes - Space Discovery Documentary

The idea of an object in space so massive and dense that light could not escape it has been around for centuries. Most famously, black holes were predicted by Einstein's theory of general relativity, which showed that when a massive star dies, it leaves behind a small, dense remnant core. If the core's mass is more than about three times the mass of the Sun, the equations showed, the force of gravity overwhelms all other forces and produces a black hole.

Scientists can't directly observe black holes with telescopes that detect x-rays, light, or other forms of electromagnetic radiation. We can, however, infer the presence of black holes and study them by detecting their effect on other matter nearby. If a black hole passes through a cloud of interstellar matter, for example, it will draw matter inward in a process known as accretion. A similar process can occur if a normal star passes close to a black hole. In this case, the black hole can tear the star apart as it pulls it toward itself. As the attracted matter accelerates and heats up, it emits x-rays that radiate into space. Recent discoveries offer some tantalizing evidence that black holes have a dramatic influence on the neighborhoods around them - emitting powerful gamma ray bursts, devouring nearby stars, and spurring the growth of new stars in some areas while stalling it in others.
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The Connected Universe - Space Documentary

How does the universe work?
How does the universe work? Understanding the universe's birth and its ultimate fate are essential first steps to unveil the mechanisms of how it works. This, in turn, requires knowledge of its history, which started with the Big Bang.

Previous NASA investigations with the Cosmic Microwave Background Explorer (COBE) and the Wilkinson Microwave Anisotropy Probe (WMAP) have measured the radiation from the universe when it was only 300,000 years old, confirming theoretical models of its early evolution. With its improved sensitivity and resolution, ESA's Planck observatory probed the long wavelength sky to new depths during its 2-year survey, providing stringent new constraints on the physics of the first few moments of the universe. Moreover, the possible detection and investigation of the so-called B-mode polarization pattern on the Cosmic Microwave Background (CMB) impressed by gravitational waves during those initial instants will provide clues for how the large-scale structures we observe today came to be.

Observations with the Hubble Space Telescope and other observatories showed that the universe is expanding at an ever-increasing rate, implying that some day - in the very distant future - anyone looking at the night sky would see only our Galaxy and its stars. The billions of other galaxies will have receded beyond detection by these future observers. The origin of the force that is pushing the universe apart is a mystery, and astronomers refer to it simply as dark energy. This new, unknown component, which comprises ~68% of the matter-energy content of the universe, will determine the ultimate fate of all. Determining the nature of dark energy, its possible history over cosmic time, is perhaps the most important quest of astronomy for the next decade and lies at the intersection of cosmology, astrophysics, and fundamental physics.

Knowing how the laws of physics behave at the extremes of space and time, near a black hole or a neutron star, is also an important piece of the puzzle we must obtain if we are to understand how the universe works. Current observatories operating at X-ray and gamma-ray energies, such as the Chandra X-ray Observatory, NuSTAR, Fermi Gamma-ray Space Telescope, and ESA's XMM-Newton, are producing a wealth of information on the conditions of matter near compact sources, in extreme gravity fields unattainable on Earth.

Is The Black hole The Most Powerful Force In The Universe? - Space Science Documentary

Black holes are some of the strangest and most fascinating objects in outer space. They're extremely dense, with such strong gravitational attraction that even light cannot escape their grasp if it comes near enough.

Albert Einstein first predicted the existence of black holes in 1916, with his general theory of relativity. The term black hole was coined many years later in 1967 by American astronomer John Wheeler. After decades of black holes being known only as theoretical objects, the first physical black hole ever discovered was spotted in 1971.

Then, in 2019 the Event Horizon Telescope (EHT) collaboration released the first image ever recorded of a black hole. The EHT saw the black hole in the center of galaxy M87 while the telescope was examining the event horizon, or the area past which nothing can escape from a black hole. The image maps the sudden loss of photons (particles of light). It also opens up a whole new area of research in black holes, now that astronomers know what a black hole looks like.

So far, astronomers have identified three types of black holes: stellar black holes, supermassive black holes and intermediate black holes.
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Cosmic black holes and the Universe Documentary national geographer 2019

Cosmic black holes and the Universe Documentary national geographer 2019

The Most Dangerous Supermassive Giant Black Hole in the Universe Documentary

BLACK HOLES ARE points in space that are so dense they create deep gravity sinks. Beyond a certain region, not even light can escape the powerful tug of a black hole's gravity. And anything that ventures too close—be it star, planet, or spacecraft—will be stretched and compressed like putty in a theoretical process aptly known as spaghettification.

There are four types of black holes: stellar, intermediate, supermassive, and miniature. The most commonly known way a black hole forms is by stellar death. As stars reach the ends of their lives, most will inflate, lose mass, and then cool to form white dwarfs. But the largest of these fiery bodies, those at least 10 to 20 times as massive as our own sun, are destined to become either super-dense neutron stars or so-called stellar-mass black holes.
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Mysteries of the Universe - Space Documentary [HD]

When NASA began 60 years ago, we had questions about the universe humans had been asking since we first looked up into the night sky. In the six decades since, NASA, along with its international partners and thousands of researchers, have expanded our knowledge of the Universe by using a full fleet of telescopes and satellites. From the early probes of the 1950s and 1960s to the great telescopes of the 1990s and 21st century, NASA scientists have been exploring the evolution of the universe from the Big Bang to the present.

The Great Observatories
NASA astronomers use several kinds of telescopes in space and on the ground. Each observes targets like stars, planets, and galaxies, but captures different wavelengths of light using various techniques to add to our understanding of these cosmic phenomenon.
Dark Matter
NASA telescopes have helped us better understand this mysterious, invisible matter that is five times the mass of regular matter. The first direct detection of dark matter was made in 2007 through observations of the Bullet Cluster of galaxies by the Chandra x-ray telescope.

Black Holes
Although we can’t “see” black holes, scientists have been able to study them by observing how they interact with the environment around them with telescopes like Swift, Chandra, and Hubble. In 2017, NASA's Swift telescope has mapped the death spiral of a star as it is consumed by a black hole. This year, astronomers using Chandra have discovered evidence for thousands of black holes located near the center of our Milky Way galaxy.
Galaxies
A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, held together by gravity. Some are spiral-shaped like our Milky Way Galaxy; others are smooth and oval shaped. NASA telescopes are helping us learn about how galaxies formed and evolved over time.
Exoplanets
Just 30 years ago, scientists didn’t know if there were planets orbiting other stars besides our own Sun. Now, scientists believe every star likely has at least one exoplanet. They come in a wide variety of sizes, from gas giants larger than Jupiter to small, rocky planets about as big as Earth or Mars. They can be hot enough to boil metal or locked in deep freeze. They can orbit their stars so tightly that a “year” lasts only a few days; they can even orbit two stars at once. Some exoplanets don’t orbit around a star, but wander through the galaxy in permanent darkness. NASA’s Kepler spacecraft and newly-launched Transiting Exoplanet Survey Satellite are helping us find more distant worlds
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Universe How The Super Black Hole Was Created | Discovery Documentary 1080p

Universe - How The Super Black Hole Was Created | Discovery Documentary 1080p Blow Your Mind - Extraterrestrial Alien Life In The Universe Space .

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From an Apollo 16 UFO sighting to a possible moonbase, here are the 5 most mysterious photos caught by NASA on the moon. 5 mysterious photos from the .



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How Black Holes Kill Galaxies

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Black holes are really only dangerous if you get too close. Ha, who am I kidding. It turns out they may be responsible for ending star formation across the entire universe.

Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Leonardo Scholzer
Directed by Andrew Kornhaber
Produced By: Kornhaber Brown

When we first realized that black holes could have masses of millions or even billions of times that of the sun, it came as a bit of a shock. They were discovered as the driving force behind quasars, where matter is heated to extreme incandescence before its plunge into vast black holes. But if that weren’t enough, we soon realized that every single decent-sized galaxy contains such a supermassive black hole. By the beginning of the 21st century it became clear that black holes and the galaxies that contain them are very closely connected. The bigger the galaxy, the bigger its supermassive black hole. That might not sound surprising. What was weird was how closely they were connected. There’s a tight correlation between the mass the central black hole and the mass of the stars in the galactic bulge – that’s the central ball-like part of a spiral galaxy, or the entirety of an elliptical galaxy, and every bulge contains a supermassive black hole around one-one-thousandth its mass. And there’s an even tighter relationship between the black hole mass and the speed that stars are moving in their random orbits within the galactic bulge – the so-called stellar velocity dispersion – which itself depends of the total mass of the galaxy, including dark matter.

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سلطان الخليفي

black hole discoveries new documentary 2019

Last week scientists produced the first image of a black hole, shining a light on one of the universe’s great mysteries.It’s not actually a photo of a black hole
This week, scientists produced the first real image of a black hole, in a galaxy called Messier 87. The image is not a photograph but an image created by the Event Horizon Telescope (EHT) project. Using a network of eight ground-based telescopes across the world, the EHT collected data to produce the image. The black hole itself is unseeable, as it’s impossible for light to escape from it; what we can see is its event horizon. The EHT was also observing a black hole located at the centre of the Milky Way, but was unable to produce an image. While Messier 87 is further away, it was easier to observe, due to its larger size.

Event horizon
The golden ring is the event horizon, the moment an object approaching a black hole reaches a point of no return, unable to escape its gravitational pull. Objects that pass into the event horizon are thought to go through spaghettification, a process, first described by Stephen Hawking, in which they will be stretched out like a piece of pasta by gravitational forces.

The hole in the centre
Heino Falcke, professor of radio astronomy and astroparticle physics at Radboud University in Nijmegen, and chair of the EHT science council, says the image shows a silhouette of the hole against the surrounding glow of the event horizon, all of the matter being pulled into the hole. At the centre of the black hole is a gravitational singularity, where all matter is crushed into an infinitely small space.

How big is the black hole?
The black hole lies 55m light years away from us. It is around 100bn km wide, larger than the entire solar system and 6.5bn times the mass of our sun.

What does this mean for physics?
Through creating an image of a black hole, something previously thought to be impossible, the EHT project has made a breakthrough in the understanding of black holes, whose existence has long been difficult to prove. The image will help physicists to better understand how black holes work and images of the event horizon are particularly important for testing the theory of general relativity.
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How the Universe Works S06E10 - The Mystery of Space-Time

Space-time is the secret structure that controls the universe, and this strange four-dimensional substance controls time, light, and energy.

Black Holes

So about 10 days ago ESA took the first ever picture of a black hole (kinda). A good occasion for me to explain in brief just how bizarre Black Holes truly are.

If you have any projects you want to suggest next, feel free to leave them in the comment section below!!!

Enjoy, Like, Comment and Subscribe!
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Black Holes Explained – From Birth to Death

Black holes. Lets talk about them.

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How the universe work BLACK HOLE PART-1 (HINDI TV SHOW)

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How the Universe Works - Twin Suns The Alien Mysteries - Full HD Documentary

Planets that orbit two suns instead of one might be deadly hell worlds, but new discoveries reveal that sci-fi star systems with binary stars might be optimal places for alien life.

Voices and commentary by James S. Bullock, Dan Durda, Idan Ginsburg and many more.

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Narrated by Richard Lintern

Produced by Pioneer Productions on Behalf of Discovery Channel UK

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How the Universe Works Amazing Facts About Universe Space Discovery Documentary

Alien Planets Discovery Documentary - Alien Stom - Space Science

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At the centre of some black holes is 'an area where space and time exists' Colonies of aliens living on planets within black holes may not be as far-fetched as it sounds. Some black holes have a complex internal structure that allows photons, particles and planets to orbit a central singularity, according to one scientist. A singularity is the region in a black hole when space and time become infinite. However, Professor Vyacheslav Dokuchaev claims that at the centre of certain black holes, and under the right conditions, is an area where the fabric of space and time exists once more. If a charged and rotating black hole is large enough, he said, it can weaken the tidal forces that are beyond the event horizon - the point where nothing, not even light, can escape a black hole's gravity.

Naked Science - Birth of the Universe

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Where does a cup of coffee come from? In this film, it’s not Starbucks, it’s stars busting. We go right back to the beginning of time to show where the ingredients in your cup of coffee were born.

The main ingredient is hydrogen; it makes up most of the water in your cup. And that formed in the big bang. How it got from there, into your cappuccino is one of the most dramatic stories in science. It has taken thousands of scientists to track its trail. We follow it through stars and galaxies, exploding supernovae, and giant clouds of gas to show just how it reached your cup.

But that isn’t the end of the story. For where it goes in the future, depends on the fate of the universe. Will it carry on expanding for ever, or tear itself apart?

A Journey Into the Solar System's Outer Reaches Documentary - Explore Planets in the Universe

It wasn’t long ago when astronomers who wanted to search for planets outside our solar system were considered daft. A couple of brave scientists began the search, found what they were looking for, and started a whole new area in astronomy. Hundreds of exoplanets have been identified and those who invest their careers in this search are no longer ridiculed. The search has led to a very respectable and fast-growing new field: astrobiology (sometimes called exobiology).

So what do astrobiologists expect to find and how do they build their models of alien life?

As far as we know, the fundamental ingredients for life are hydrogen, oxygen, nitrogen and carbon, the most common elements in the known universe. Earth life is composed principally of these four, plus sulphur and phosphorus and traces of other elements, for a total of some 26 elements. It is amazing to realize that such a small number of basic ingredients can give rise to such diversity as we find. The other essential for life seems to be water. On Earth, life exists in all climates and conditions where there is water, and in the very few areas where there is absolutely no water there is absolutely no life. Water is abundant in the universe, although more in the form of ice than liquid.

Space Discovery Documentary - What's on the other side of a Black Hole?

Picture an entire star collapsed down into a gravitational singularity. An object with so much mass, compressed so tightly, that nothing, not even light itself can escape its grasp. It’s no surprise these objects have captured our imagination… and yet, I have a complaint.

The name “black hole” seems to have created something of a misunderstanding. And the images that show the gravitational well of a black hole don’t seem to help either.

From all the correspondence I get, I know many imagine these objects as magnificent portals to some other world or dimension. That they might be gateways which will take you off to adventures with beautiful glistening people in oddly tailored chainmail codpieces and bikinis.

So, if you were to jump into a black hole, where would you come out? What’s on the other side? Where do they take you to? Black holes don’t actually “go” anywhere. There isn’t an actual “hole” involved at all.......

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